For hydrogen atom, energy of an electron in first excited state is -3.4 eV, K.E. of the same electron of hydrogen atom is x eV. Value of x is ______ . (Nearest integer)
Answer: 34
Solution
For hydrogen (Bohr model), total energy equals times the kinetic energy, (virial theorem for a Coulomb potential). At the first excited state, eV, so .
JEE Main · 2024 · 06 Apr 2024 · Shift 2 · Integer answer